import { defineField, defineType } from 'sanity';

export const postType = defineType({
  name: 'post',
  title: 'Post',
  type: 'document',
  fields: [
    defineField({
      name: 'title',
      title: 'Title',
      type: 'string',
      validation: (r) => r.required(),
    }),
    defineField({
      name: 'slug',
      title: 'Slug',
      type: 'slug',
      options: { source: 'title', maxLength: 96 },
      validation: (r) => r.required(),
    }),
    defineField({
      name: 'date',
      title: 'Date',
      type: 'date',
      options: { dateFormat: 'YYYY-MM-DD' },
      validation: (r) => r.required(),
    }),
    defineField({
      name: 'category',
      title: 'Category',
      type: 'string',
      options: {
        list: [
          { title: 'News',        value: 'News' },
          { title: 'Events',      value: 'Events' },
          { title: 'Fundraising', value: 'Fundraising' },
        ],
      },
      initialValue: 'News',
      validation: (r) => r.required(),
    }),
    defineField({
      name: 'summary',
      title: 'Summary',
      type: 'text',
      rows: 3,
      description: 'One or two sentences shown in article cards and meta descriptions.',
      validation: (r) => r.required().max(300),
    }),
    defineField({
      name: 'image',
      title: 'Cover image',
      type: 'image',
      options: { hotspot: true },
      fields: [
        defineField({
          name: 'alt',
          title: 'Alt text',
          type: 'string',
        }),
      ],
    }),
    defineField({
      name: 'body',
      title: 'Body',
      type: 'array',
      of: [
        {
          type: 'block',
          styles: [
            { title: 'Normal', value: 'normal' },
            { title: 'Heading 2', value: 'h2' },
            { title: 'Heading 3', value: 'h3' },
            { title: 'Quote', value: 'blockquote' },
          ],
          marks: {
            decorators: [
              { title: 'Bold',   value: 'strong' },
              { title: 'Italic', value: 'em' },
            ],
            annotations: [
              {
                name: 'link',
                type: 'object',
                title: 'Link',
                fields: [
                  {
                    name: 'href',
                    type: 'url',
                    title: 'URL',
                    validation: (r) =>
                      r.uri({ allowRelative: true, scheme: ['http', 'https', 'mailto', 'tel'] }),
                  },
                  {
                    name: 'blank',
                    type: 'boolean',
                    title: 'Open in new tab',
                    initialValue: false,
                  },
                ],
              },
            ],
          },
        },
        { type: 'image', options: { hotspot: true } },
      ],
    }),
  ],
  preview: {
    select: {
      title:    'title',
      subtitle: 'date',
      media:    'image',
    },
  },
});